constify struct pci_dev * in obvious cases

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
diff --git a/arch/alpha/kernel/sys_dp264.c b/arch/alpha/kernel/sys_dp264.c
index bb7f0c7..13f0717 100644
--- a/arch/alpha/kernel/sys_dp264.c
+++ b/arch/alpha/kernel/sys_dp264.c
@@ -366,7 +366,7 @@
  */
 
 static int __init
-isa_irq_fixup(struct pci_dev *dev, int irq)
+isa_irq_fixup(const struct pci_dev *dev, int irq)
 {
 	u8 irq8;